Art of drawing glass



Nav. 27, 1923.

Filed Dec. V, 1922 `H J WALTER ART oF 'DRAWING GLASS Patented Novi. 2?,w23.

nur

avam- K'Utr J. WALTER, DE' BRADFORD, PENNSYLVANIA, ASSIGNR TO ENTERSTATEWIN- DUW GLASS COMPANY, 0F ERADFOl-D, PENNSYLVANIA.

ART or DRAWING v GLass.

Application filed December 7', 1922. I Serial Re. 65E-5,48?.

To aZZ fwom it may concern.'

Be it known that Huso J. VVAL'rnn, a

citizen of the United States, and a resident of Bradford, in the countyof McKean and State of Pennsylvania, have invented certain new anduseful Improvements in'the Art of Brewing Glass;l and I do herebydeclare the following to be a `full, clear, and exact description of theinvention, such as will Aenable others skilled in the art to which it apertains to make and use the same.

l y invention relates to the art of drawing glass and its object is toproduce `a glass sheet of indenite length and of good quality which 'maybe cut subsequently into plates of any desired size. Another object ofthe invention is to providea method of drawing glass which iscommercially practical and which may be performed as a continuousoperation to produce a glass sheet of indeterminate length but willavoid the necessity of liowing the glass continuously from a meltingtank or furnace to a drawing pot.

My invention may be successfully practiced by the use of machineryhaving the general characteristics of that illustrated in theaccompanying drawings in which Figure 1 is a sectional elevation of aportion oa glass-melting tank or furnace associated with a drawing andannealing mechanism which is shown in a more or less conventionalmanner.

Figure 2- is a view taken at a right angle.

to Fig. 1;

Figure 3 is a detail perspective view of a drawing pot which may beused.

The furnace -or tank l is so constructed as to rovide a return drainchamber 2 and a pot c amber 3 in which one or more pots yi areaccommodated together with means for shifting between the drain passage5 and-the drawing position' 6. In the illustrated arrangement, the potsare fixed upon the outer ends of arms 7 which are at a right angle` toeach other and are fixed upon a shaft v8 disposed within the chamber 3at yan angle of 45 degrees. Said shaft is supported in suitable bearingson the floor of the chamber 3 and on the roof portion 9 of the furnaceor kiln, respectively, andfit mayr be rotated by any convenientmechanism. it will ne readily noted that rotating the shaft throughone-half a revolutionl will carry a pot-carrying arm from a horizontalte a vertical position. mm1! Vice versa ard/n .the horizontal positionof the arm the -p0t thereon will be disposed :in thel opening of thedrain passage 5 while in the vertical Assuming that no glass has, asyet, been drawn, glass is ladled or run into the p ot,

which is at the drawing-point 6 and the ap aratus 10 islowered until theusual bait 1s vbrought into contact with the surface of the glass in thepot. The apparatus is then operated to draw the glass from th'e pot .inla sheet, and it will be noted, on reference to Figure 3, that the pot iselliptical or oblong in form so that' the glass may readil assume asheetform.A After all the glass as been drawn from the pot, except such smallresidue as experience r circumstances may determine to.v be necessary oradvisable,.- the drawing operation is stopped and the drawn close aspossible to the pot.` The apparatus v1'0 is, then raised as an entiretyuntil the lowerend of the sheet is clear of the pot,

whereupon the shaft 8 is rotated so that..

the pot will be carried to the draining positinn, the same actioncarrying to the drawing position the pot which had been draining andheating. The pot brought to the draining position will be exposed to theheat from the tank or furnace and the small residueof glass left thereinwill melt and drain back into thefurnace. In the mean while, however,glass will be ladled or run into the pot which was brought to thedrawing point after which the drawing and annealing apparatus 10 islowered until the lower endk of the previously drawn sheet orsection'enters the bath of glass in the pot. The end of the sheet weldswith ythe glass in the pot and the machinery is then operated to give avertical movement to the sheet and draw the glass from the pot, thecycle of operations being repeated indefinitely. After passing upthrough the machine, the glass is cut into desired lengths by anywell-known method.

'It will be readily -seen that by my method l the glass is drawn inrelatively short sections but a continuous integralsheet of in-l denitelength is produced, each section Serving as a bait for the succeedingsection is; supplied with as .reiat'vsiy "smaii iiiz'ge which Wii asiiiyremain ai", the pmpei 26am pemxire dwing the drawing; @pemion7V and theinish'ed product' Wiil be a hmogeneus 5 shea?, fue@ 0:6 Wrinkles m."Similari- @ie-acts.

Liwiilgg fuiiy escribed my inveniion Wiizi: l" daim as new and dersim t@Secure by Liebt-mfg wen'b, isz--- The impiowmen in the am of ch'awing7.0 giass which consists in drawing a. series of Siiee' and Welding@zich sheet '63e the succeed ing sheet aiming th@ raming operation.

Tha imp'ovement in thefart of drawing ,giass sheath@ Wiiicii consists indrawing a plu- 13 iaziiiy 0i." sections .in interupted succession, @zichsection forming the bait for a, succeed ing section. The improvement inthe art o draw img glass sheets which consists in providing 2H apuraiityo ciiaiges of maken gass, and drawing shees in intex'rupedsuccession from the save-rai charges, erich shee; being *vided tomie-preceding sheet.

L Tiiiaimpmmmsnt inthe art of dr'awiiig' giiss shes Whisk @insists inprsenting @i moian successively' to a dffzwing appsirmzus, drawing asheet from mail charge of glass, and causing each lsheet drawn Sn serveas; a haii, fos? the succeeding' Sinisi: whereby the Successive sheetswill be 'Walid-ed fogaher., l

5. Th@ mpmvement in the art of drawing Sheets whisk consists in drawingsections successively imm a series of charges, Welding @zich setion zothe preceding section during the cizawing" operation, and annealing thedrawn sections simultaneously With the drawing of succeeding sections.

in testimony whereof, I have signed this speciicaiion in the pivesenceof two subscri img Witnesses.

HUG@ J. WALTER.

Witnesses:

GALLUP,

E, STEWARTV

